Array ( [0] => Array ( [title] => L7A [link] => https://www.youtube.com/embed/uwrI9fS_my8 ) [1] => Array ( [title] => L7B [link] => https://www.youtube.com/embed/jUIdfli9VZk ) [2] => Array ( [title] => L7C [link] => https://www.youtube.com/embed/F-UeaQ5ftnk ) ) 國立清華大學開放式課程OpenCourseWare(NTHU, OCW) - 第7R講 Regular Surface